MySQL is a SQL (Structured Query Language) database server. SQL is the most
popular database language in the world. MySQL is a client-server implementation
that consists of a server daemon `mysqld' and many different client
programs/libraries.

The main goals of MySQL are speed and robustness.

The base upon which MySQL is built is a set of routines that have been used in
a highly demanding production environment for many years. While MySQL is still
in development it already offers a rich and highly useful function set.

The official way to pronounce 'MySQL' is 'My Ess Que Ell' (Not MY-SEQUEL).

Log message:
mysql56: updated to 5.6.47
Changes in MySQL 5.6.47:
Bugs Fixed
Replication: When GTIDs are enabled on a replication master and slave, and the \
slave connects to the master with the MASTER_AUTO_POSITION=1 option set, the \
master must send the slave all the transactions that the slave has not already \
received, committed, or both. If any of the transactions that should be sent by \
the master have been already purged from the master's binary log, the master \
sends the error ER_MASTER_HAS_PURGED_REQUIRED_GTIDS (1789) to the slave, and \
replication does not start.
The message provided for the error ER_MASTER_HAS_PURGED_REQUIRED_GTIDS has been \
changed to provide advice on the correct action in this situation, which is for \
the slave to replicate the missing transactions from another source, or for the \
slave to be replaced by a new slave created from a more recent backup. The \
message advises that the master's binary log expiration period can be revised to \
avoid the situation in future. In addition, the master now identifies the GTIDs \
of the purged transactions and supplies them in its error log in the warning \
message ER_FOUND_MISSING_GTIDS (11809), so that you do not need to calculate the \
missing GTIDs manually.
With multiple sessions executing concurrent INSERT ... ON DUPLICATE KEY UPDATE \
statements into a table with an AUTO_INCREMENT column but not specifying the \
AUTO_INCREMENT value, inserts could fail with a unique index violation.
A SELECT using a WHERE condition of the form A AND (B OR C [OR ...]) resulting \
in an impossible range led to an unplanned exit of the server.
An incomplete connection packet could cause clients not to properly initialize \
the authentication plugin name.

Log message:
mysql56: updated to 5.6.46
Changes in MySQL 5.6.46
Configuration Notes
It is now possible to compile MySQL 5.6 using OpenSSL 1.1.1, enabling \
compilation support for MySQL 5.6 against OpenSSL even when OpenSSL 1.0.2 \
reaches End of Life status at the end of 2019.
In addition, MySQL 5.6 now supports TLSv1.1 and TLSv1.2 protocols for encrypted \
connections. This applies to MySQL Server, MySQL clients such as mysql and \
mysqldump, and master/slave replication. Previously, MySQL 5.6 supported only \
TLSv1, so TLSv1.1/TLSv1.2 support enables use of more secure TLS protocols. It \
also enables connecting from MySQL 5.6 clients and replication slaves to MySQL \
5.7 and higher servers that have TLSv1 disabled, which previously was not \
possible. It also means that MySQL 5.7 and higher clients that do not want to \
use TLSv1 can connect to MySQL 5.6 servers.
All MySQL 5.6 builds now use OpenSSL. MySQL no longer supports using yaSSL as \
the SSL library, and source distributions no longer include yaSSL.
The WITH_SSL CMake option no longer permits bundled (use yaSSL) as a valid \
value, and the default option value has changed from bundled to system (use the \
version of OpenSSL installed on the host system).
Bugs Fixed
Improper locking during storage engine initialization could cause a server exit.
A query with a WHERE clause whose predicate contained a numeric value in \
scientific notation was not handled correctly.
VS2019 produced compilation errors with debug compilation selected due to use of \
the /ZI flag. Now /Z7 is used instead.
Password masking was incomplete for SHOW PROCESSLIST and some INFORMATION_SCHEMA \
and Performance Schema tables.
The -DWITH_EXAMPLE_STORAGE_ENGINE=1 CMake option was ignored but should not have \
been. If -DWITH_EXAMPLE_STORAGE_ENGINE=0 is given, the EXAMPLE storage engine is \
built as a plugin.